Invention Grant
- Patent Title: Semiconductor memory device
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Application No.: US14592729Application Date: 2015-01-08
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Publication No.: US09324406B2Publication Date: 2016-04-26
- Inventor: Susumu Shuto , Takayuki Okada , Iwao Kunishima
- Applicant: KABUSHIKI KAISHA TOSHIBA
- Applicant Address: JP Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP2013-044106 20130306
- Main IPC: G11C11/22
- IPC: G11C11/22 ; G11C11/412

Abstract:
According to one embodiment, a semiconductor memory device includes a memory cell and a control circuit. The memory cell is such that a ferroelectric film is provided as a gate dielectric film. When data is stored in the memory cell, the control circuit applies a first voltage to the gate dielectric film and thereafter applies a second voltage, whose amplitude is smaller than that of the first voltage and whose polarity is opposite to that of the first voltage.
Public/Granted literature
- US20150117085A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2015-04-30
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